. >> brown: special correspondent john tulenko reports on a college program that's raised graduation rates for minority students. >> some of these kids have lives that are so complicated that they need a lot more. that's what we do. >> ifill: and margaret warner speaks to two analysts about north korea's latest succession drama. >> brown: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> brown: on the surface, today's housing news looked pretty good. it came from a closely watched report on property values known as the case-shiller index. the survey found home prices rose in july for the fourth straight month. in all, a dozen cities out of 20 reported gains, while seven were down. one was unchanged. but that was partly because home sales were boosted by a federal tax credit that has since expired. president obama addressed the housing issue today. speaking in albuquerque, new mexico, he